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Endoscope has control section and shaft with frame, and pipe containing slits

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Publication number
DE10052679A1
DE10052679A1 DE2000152679 DE10052679A DE10052679A1 DE 10052679 A1 DE10052679 A1 DE 10052679A1 DE 2000152679 DE2000152679 DE 2000152679 DE 10052679 A DE10052679 A DE 10052679A DE 10052679 A1 DE10052679 A1 DE 10052679A1
Authority
DE
Grant status
Application
Patent type
Prior art keywords
shaft
pipe
section
control
endoscope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE2000152679
Other languages
German (de)
Inventor
Gregory S Konstorum
Edward A Grabover
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GYRUS ACMI, INC. (N.D.GES.D. STAATES DELAWARE), US
Original Assignee
Circon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064Constructional details of the endoscope body
    • A61B1/00071Insertion part of the endoscope body
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part
    • A61B1/0055Constructional details of insertion parts, e.g. vertebral elements
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B23/00Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476Non-optical details, e.g. housings, mountings, supports
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part

Abstract

The endoscope has a control section from which a shaft extends. The shaft has a frame with a one-piece pipe (40) along the main part of the shaft's length. The pipe consists of a super-elastic alloy and has slits (46) at least over a section (52,54,56,59). The shaft has pre-set buckling resistance, flexibility and torsional strength.

Description

Die Erfindung betrifft medizinische Instrumente, spezieller Endoskope. The invention relates to medical instruments, special endoscopes.

UK-A-2 130 885 offenbart einen flexiblen distalen Endab schnitt eines Endoskops. UK-A-2,130,885 discloses a flexible distal Endab section of an endoscope. Dieser Endabschnitt besteht aus Kunststoff mit Wirbeln, die durch ein langgestrecktes Ele ment oder ein Rückgrat verbunden sind. This end portion is made of plastic with vertebrae, the element by an elongated Ele or a backbone, respectively. US-A-5,938,588 offen bart ein Endoskop mit Drahtumhüllungen in Form durchgehender Rohre aus einer superelastischen Legierung. US-A-5,938,588 discloses an endoscope with wire coverings in the form of continuous tubes from a superelastic alloy.

Der Erfindung liegt die Aufgabe zu Grunde, ein Endoskop mit verbesserter Flexibilität zu schaffen. The invention is based on the object to provide an endoscope with improved flexibility.

Diese Aufgabe ist hinsichtlich des Endoskops durch die Leh ren der beigefügten unabhängigen Ansprüche 1, 15 und 20 so wie hinsichtlich des Verfahrens durch die Lehren der beige fügten unabhängigen Ansprüche 25 und 32 gelöst. This object is with respect to the endoscope by the Leh ren of the appended independent claims 1, 15 and 20 as regards the method by the teachings of the beige appended independent claims 25 and 32nd

Weitere Gesichtspunkte und Merkmale der Erfindung werden in der folgenden Beschreibung unter Bezugnahme auf die beige fügten Zeichnungen erläutert. Other aspects and features of the invention are explained in the following description with reference to the accompanying attached drawings.

Fig. 1 ist eine Seitenansicht eines Endoskops gemäß einer Ausführungsform der Erfindung; Fig. 1 is a side view of an endoscope according to an embodiment of the invention;

Fig. 2 ist eine Schnittansicht des Schafts des in Fig. 1 dargestellten Endoskops; Fig. 2 is a sectional view of the shaft of the endoscope shown in FIG. 1;

Fig. 3 ist eine Seitenansicht des Rohrs, das für den Rahmen des in Fig. 2 dargestellten Schafts verwendet ist; Fig. 3 is a side view of the pipe that is used for the frame of the shaft shown in Fig. 2;

Fig. 4A ist eine Schnittansicht des in Fig. 3 dargestellten Rohres entlang der dortigen Linie 4 A- 4 A; FIG. 4A is a sectional view of the tube shown in Figure 3 along the line 4 4 A A.

Fig. 4B ist eine Schnittansicht des in Fig. 3 dargestellten Rohrs entlang der dortigen Linie 4 B- 4 B; FIG. 4B is a sectional view of the tube shown in Figure 3 along the line 4 4 B B.

Fig. 4C ist eine vergrößerte Ansicht eines Teils des ersten Abschnitts des in Fig. 3 dargestellten Rohrs; Fig. 4C is an enlarged view of a portion of the first section of the tube shown in Fig. 3;

Fig. 5 ist eine Teilseitenansicht des in Fig. 3 dargestell ten Rohrs in gebogenem Zustand; Fig. 5 is a partial side view of the dargestell th in Fig 3 tube in a bent condition.

Fig. 6A bis 6D sind Schnittansichten des dritten Abschnitts des in Fig. 3 dargestellten Rohrs, wobei vier verschiedene Schlitzrichtungen im Rohr dargestellt sind; Figs. 6A to 6D are sectional views of the third section of the tube shown in Figure 3 with four different slit directions are shown in the pipe.

Fig. 7A bis 7E sind Schnittansichten eines Rohrs gemäß einem alternativen Ausführungsbeispiel der Erfindung und FIGS. 7A to 7E are sectional views of a tube according to an alternative embodiment of the invention, and

Fig. 8 ist eine Schnittansicht eines alternativen Ausfüh rungsbeispiels eines Schafts. Fig. 8 is a sectional view of an alternative embodiment of an exporting approximately stem.

Nun wird die Erfindung unter Bezugnahme auf die in den Zeichnungen dargestellten Ausführungsbeispiele näher ge schrieben, jedoch ist zu beachten, dass die Erfindung auf viele alternative Weisen realisiert werden kann. Now the invention with reference to the drawings shown in the embodiments is described in more detail ge, but it should be noted that the invention can be realized in many alternative ways. Dabei kön nen jeweils geeignete Größen, Formen oder Arten von Elemen ten oder Materialien verwendet werden. In this case, NEN respective suitable sizes, shapes, or types of elemene Kgs th or materials are used.

Das in Seitenansicht in Fig. 1 dargestellte Endoskop 10 ver fügt im Wesentlichen über einen Griff oder einen Steuerungs teil 12 und einen flexiblen oder halbflexiblen Schaft 14 , der mit dem Griff 12 verbunden ist. The endoscope 10 illustrated in side view in Fig. 1 ver adds substantially over a handle or a control part 12 and a flexible or semi-flexible shaft 14 which is connected to the handle 12. Der Schaft 14 verfügt über einen passiven Auslenkabschnitt 16 und einen aktiven Auslenkabschnitt 18 an seinem distalen Ende. The shank 14 has a passive deflection section 16 and an active deflection section 18 at its distal end. Ausgehend vom Griff 12 erstreckt sich ein Steuerungssystem 22 zum Steuern des aktiven Auslenkabschnitts 18 zu diesem. Starting from the handle 12 to a control system 22 extends for controlling the active Auslenkabschnitts 18 thereto. Wie es auch aus Fig. 2 erkennbar ist, verfügt das Steuerungssystem 22 im We sentlichen über ein Paar Steuerungsdrähte 24 a, 24 b, zwei Drahthüllen 50 a, 50 b und ein Betätigungselement 28 . As can be seen from FIG. 2, the control system 22 has in sentlichen We via a pair of control wires 24 a, 24 b, two wire sleeves 50 a, 50 b and an actuator 28. Die Drähte 24 a, 24 b sind an einem Ende mit dem Betätigungsele ment 28 und am anderen Ende mit dem aktiven Auslenkabschnitt 18 verbunden. The wires 24 a, 24 b are ment at one end to the Betätigungsele 28 and connected at the other end with the active deflection section 18th

Beim bevorzugten Ausführungsbeispiel verfügt der Griff 12 über einen vom Benutzer bedienbaren Schlitten oder Hebel 30 . In the preferred embodiment the handle 12 has a user operable lever or slide 30th Der Hebel 30 ist mit dem Betätigungselement 28 verbunden. The lever 30 is connected with the actuating element 28th Das Betätigungselement 28 ist so ausgebildet, dass es an den zwei Drähten 24 a, 24 b des Steuerungssystems 22 zieht oder diesen nachgibt. The actuating element 28 is formed so that it at the two wires 24 a, 24 b of the control system 22 draws or these yields. Wenn der Hebel 30 vom Benutzer bedient wird, wird das Betätigungselement 28 verstellt. When the lever is operated by the user 30, the actuator 28 is adjusted. Das Betäti gungselement 28 kann eine drehbar mit dem Griff 12 verbundene Trommel oder Scheibe sein, um an einem Draht 24 a, 24 b zu ziehen, während der andere gelockert wird. The Actuate the restriction member 28 may be a rotatably connected to the handle 12 drum or disc to be logged in to a wire 24 a, 24 b to move, while the other is loosened. Bei einem alter nativen Ausführungsbeispiel kann das Betätigungselement eine beliebige geeignete Einrichtung sein, wie ein Kipphebelarm, der so ausgebildet ist, dass er die Drähte des Steuerungs systems 22 anzieht oder lockert. In an old native embodiment, the actuator may be any suitable device such as a rocker arm, which is designed such that it attracts the wires of the control system 22 or loosens. Bei einem anderen alterna tiven Ausführungsbeispiel, bei dem das Steuerungssystem zwei oder mehr Paare von Steuerungsdrähten aufweisen kann, ver fügt der Griff über zusätzliche Betätigungselemente und ent sprechende Steuerungsteile zum Betreiben der zusätzlichen Paare von Steuerungsdrähten. In another alterna tive embodiment in which the control system may comprise two or more pairs of control wires, ver adds the handle additional actuators and ent speaking control components for operating the additional pairs of control wires. Bei noch anderen alternativen Ausführungsbeispielen kann der Griff über Knöpfe mit Zahn stangenmechanismen oder über andere geeignete, vom Benutzer bedienbare Steuerungsteile für das Steuerungssystem verfü gen. In still other alternative embodiments, the handle buttons with tooth can rod mechanisms or gen Availability checked via other suitable user operable control components for the control system.

Der Schaft 14 ist einseitig am Griff 12 eingespannt. The shaft 14 is cantilevered on the handle 12th Beim bevorzugten Ausführungsbeispiel verfügt der flexible Schaft 14 über einen Durchmesser von ungefähr 8 Fr (1 Fr = 1 Charrière = 1/3 mm). In the preferred embodiment, the flexible shaft 14 has a diameter of about 8 Fr (1 Fr = 1 Charrière = 1/3 mm). Bei alternativen Ausführungsbeispielen kann der flexible Schaft jeden geeigneten Durchmesser auf weisen. In alternative embodiments, the flexible shaft may have any suitable diameter. Der flexible Schaft 14 enthält die Steuerungsdrähte 24 a, 24 b des Steuerungssystems 22 , ein faseroptisches Bild erzeugungsbündel 37, ein faseroptisches Beleuchtungsbündel 36 und einen Arbeitskanal 38 . The flexible shaft 14 includes control wires 24 a, 24 b of the control system 22, a fiber optic imaging bundle 37, a fiber optic illumination bundle 36, and a working channel 38th Am Griff 12 befindet sich eine Öffnung 60 zum Einführen von Instrumenten (nicht darge stellt) in den Kanal 38 . The handle 12 to an opening 60 for insertion of instruments is (not Darge sets) into the canal 38th Der Griff 12 verfügt auch über ei nen Lichtquellenhalter 62 zum Verbinden einer Lichtquelle (nicht dargestellt) mit dem Beleuchtungsbündel 36 . The handle 12 also has ei NEN light source holder 62 for connecting a light source (not shown) to the illumination beam 36th Außerdem verfügt der Griffel 12 über ein Okular 63 , mit dem ein Be nutzer das durch das Bilderzeugungsbündel 37 vom Vorderende 20 übertragene Bild betrachten kann. In addition, the pen 12 has an eyepiece 63, with which a user can view the loading transmitted through the imaging bundle 37 from the front end 20 Fig. Bei alternativen Aus führungsbeispielen kann der flexible Schaft verschiedene Systeme enthalten. In alternative exemplary embodiments can expand the flexible shaft contain various systems. Der Schaft 14 verfügt im Wesentlichen über einen Rahmen 26 , einen Mantel 32 und einen Objektivkopf 34 . The shaft 14 has substantially a frame 26, a casing 32 and an objective head 34th Es wird auch auf Fig. 3 Bezug genommen, gemäß der der Rahmen 26 im Wesentlichen über ein einstückiges Rohr 40 ver fügt. Reference is also made to Fig 3., According to which the frame 26 40 ver substantially over a one-piece pipe inserts. Jedoch kann der Rahmen bei alternativen Ausführungs beispielen aus mehr als einem Rohr bestehen, wie aus mehre ren hintereinander angeordneten Rohren, und er kann zusätz liche Elemente aufweisen. However, the frame may in alternative execution examples of more than one tube are made, such as from several ren successively arranged tubes, and may have zusätz Liche elements. Das Rohr 40 besteht vorzugsweise aus einer Legierung mit Formgedächtnis wie Tinel oder Niti nol. The tube 40 is preferably made of a shape memory alloy such as Tinel or Niti nol. Dieses Material mit Formgedächtnis wird wegen seiner superelastischen Eigenschaften verwendet, die sich in der Fähigkeit des Materials zeigen, selbst dann ausgelenkt zu werden und elastisch in seine natürliche oder vorbestimmte Stellung zurückzukehren, wenn die Materialspannungen unge fähr 4% erreichen, dh eine Größenordnung mehr als die ty pische Streckgrenze von 0,4%, die in üblichen Metallen zu plastischer Verformung führt. This shape memory material is used due to its super-elastic properties which are reflected in the ability of the material to be even deflected and resiliently return to its natural or predetermined position when the material stresses reach unge ferry 4%, that is an order of magnitude more than the ty european yield of 0.4%, leading to common metals to plastic deformation. So wird der Begriff "super elastische Legierung" zum Bezeichnen dieses Materialtyps verwendet. Thus, the term "super-elastic alloy" used to designate this type of material. Die Drahthüllen 50 a, 50 b können ebenfalls aus diesem Materialtyp bestehen, wie es in US-A-5,938,588 offen bart ist. The wire sleeves 50 a, 50 b can also consist of this type of material as disclosed in US Patent No. 5,938,588.

Das Rohr 40 verfügt über einen mittleren Kanal 42 mit je weils offenem Vorder- und Hinterende 44 , 45 und mit Schlit zen 46 entlang zumindest eines Teils seiner Länge. The tube 40 has a central channel 42 with depending weils open front and rear ends 44, 45 and 46 along with Schlit zen at least a portion of its length. Bei die sem Ausführungsbeispiel weisen die Schlitze entlang ver schiedenen Abschnitten oder Stücken des Rohrs verschiedene Muster auf. In the sem embodiment, the slots have ver along different portions or chunks of the tube in various patterns. Genauer gesagt, sind die Schlitze 46 bei diesem Ausführungsbeispiel in drei Abschnitten 52 , 54 , 56 konfigu riert. Specifically, the slots 46 in this embodiment, in three sections 52, 54, 56 are confi riert. Jeder Abschnitt weist ein anderes Muster der Schlitze 46 auf. Each section has a different pattern of slits 46th Das mindestens eine Muster der Schlitze 46 können auf Grundlage z. The at least one pattern of the slots 46 may be based on z. B. der folgenden Variablen konfiguriert sein: For example, the following variables to be configured:

  • - Abstand zwischen benachbarten Schlitzen; - distance between adjacent slits;
  • - Richtung(en) der Schlitze in das Rohr 40 hinein; - direction (s) of the slots in the tube 40 in;
  • - Tiefe der Schlitze in das Rohr hinein; - depth of the slits into the pipe;
  • - Breite der Schlitze; - width of the slots;
  • - Form der Schlitze und - shape of the slots and
  • - Mischen verschiedener Richtungen der Schlitze entlang ei nem Stück des Rohrs. - mixing of different directions of the slots along ei nem piece of the tube.

Bei alternativen Ausführungsbeispielen kann das Rohr 40 mehr oder weniger als drei Abschnitte mit verschiedenen Schlitz mustern, wie nur einen oder zwei Abschnitte, aufweisen. In alternative embodiments, the tube can pattern 40 more or less than three sections with different slot as only have one or two portions.

Außerdem könnte das Rohr mit allmählichen oder gemischten Schlitzübergangszonen zwischen Abschnitten versehen sein, anstatt dass abrupte Übergänge zwischen Abschnitten mit ver schiedenen Schlitzmustern vorhanden sind. In addition, the tube could be provided with gradual or mixed slot transition zones between sections, rather than abrupt transitions between sections with ver different slot patterns are present. Bei diesem Ausfüh rungsbeispiel verfügt das Rohr 40 auch über zwei Abschnitte 58 , 59 ohne Schlitze. In this example approximately exporting tube 40 also has two sections 58, 59 without the slots.

Nun wird auch auf die Fig. 4A und 4B Bezug genommen, gemäß denen der erste Abschnitt 52 der Schlitze 46 entlang dem ak tiven Auslenkabschnitt 18 des Schafts vorhanden ist. Now, 4A and 4B is also made to Fig. Taken pursuant to which the first portion 52 of the slots 46 along the ak tive deflection section 18 of the shaft is present. Bei diesem Ausführungsbeispiel ist der aktive Auslenkabschnitt 18 in zwei Richtungen auslenkbar, wie es durch die gestri chelten Linien in Fig. 1 dargestellt ist. In this embodiment, the active deflection section 18 can be deflected in two directions, as shown by the gestri Chelten lines in FIG. 1. Bei alternativen Ausführungsbeispielen könnte der aktiven Auslenkabschnitt 18 nur in einer Richtung oder in mehr als zwei Richtungen aus lenkbar sein. In alternative embodiments, the active deflection section 18 could be steered in only one direction or in more than two directions. Beim aktiven Auslenkabschnitt 18 für zwei Richtungen ist der Rahmen mit zwei Schlitzrichtungen A und B in die Seite des Rohrs 40 hinein versehen, die um 180° ge geneinander versetzt sind. The active deflection section 18 for two directions of the frame with two slit directions A and B in the side of the tube 40 is provided into which are offset by 180 ° against each other ge. Es wird auch auf Fig. 4C Bezug genommen, gemäß der die Schlitze 46 eine Tiefe Y in das Rohr 40 hinein aufweisen, jedoch in entgegengesetzten Richtungen für die zwei Arten von Schlitzen 46 a, 46 b relativ zur Mit telachse 64 des Rohrs 40 . Referring 4C Referring also to Fig., According to the have the slots 46 have a depth Y into the tube 40 inside, but in opposite directions for the two types of slits 46 a, 46 b center axis relative to with 64 of tube 40. Die Schlitze verfügen über einen Mittellinienabstand X zwischen benachbarten Schlitzen 46 a, 46 b; The slots b have a center line distance X between adjacent slots 46 a, 46; außerdem weisen sie eine Breite W auf. moreover, they have a width W. Bei diesem Aus führungsbeispiel sind die Werte von W, X und Y entlang dem Stück des ersten Abschnitts 52 gleich. In this exemplary implementation From the values of W, X and Y along the piece of the first portion 52 is equal. Jedoch könnten sie bei alternativen Ausführungsbeispielen variieren. However, they could vary in alternative embodiments. Es wird auch auf Fig. 5 Bezug genommen, in der ein Teil des ersten Abschnitts 52 in gebogener Stellung dargestellt ist. It is 5 Referring also to Fig., In which a part of the first portion is shown in a bent position 52. Die Schlitze 46 versehen das Rohr 40 mit erhöhter Flexibilität entlang der Länge des ersten Abschnitts 52 . The slots 46 provide the tube 40 with increased flexibility along the length of the first portion 52nd Außerdem begren zen die zwei Richtungen A, B der Schlitze 46 im ersten Ab schnitt 52 diese erhöhte Flexibilität auf zwei entgegenge setzte Richtungen. Moreover begren zen the two directions A, B of the slots 46 in the first cut 52 from this increased flexibility in two directions entgegenge sat. Der erste Abschnitt könnte für begrenzte erhöhte Flexibilität in nur einer Richtung Schlitze nur in einer Richtung aufweisen, oder er könnte für erhöhte Flexi bilität in vier Richtungen oder allen Richtungen Schlitze in vier oder mehr Richtungen aufweisen. The first portion could have limited for increased flexibility in one direction only slots in one direction only, or it could for increased stability Flexi in four directions or all directions slots in four or more directions.

Gemäß den Fig. 3 sowie 6A bis 6D ist der zweite Abschnitt 54 entlang dem passiven Auslenkabschnitt 16 vorhanden (siehe Fig. 1). Referring to FIGS. 3 and 6A to 6D, the second portion 54 along the passive deflection section 16 (see FIG. 1) is present. Jedoch muss der passive Auslenkabschnitt 16 über seine Länge des Rahmens keine Schlitze 46 aufweisen. However, the passive deflection section 16 must have no slots 46 along its length of the frame. Bei diesem Ausführungsbeispiel ist das Rohr 40 mit Schlitzen 46 a, 46 b, 46 c und 46 d in das Rohr 40 hinein in vier Richtun gen A, B, C und D versehen, die um 90° gegeneinander ver setzt sind. In this embodiment, the tube 40 with slots 46 a, 46 b, 46 c and 46 d in provided in the pipe 40 in four Richtun gene A, B, C and D, which are at 90 ° to each other ver sets. Die Schlitze 46 a, 46 b, 46 c, 46 d sind mit sich wiederholendem Muster der Reihe nach angeordnet, jedoch könnte jede geeignete Mischung der Muster der Schlitze 46 a, 46 b, 46 c, 46 d vorhanden sein. The slots 46 a, 46 b, 46 c, 46 d with repeating pattern sequentially arranged, but could be any suitable mixture of the pattern of the slots 46 a, 46 b, 46 c, d to be available 46th Bei diesem Ausführungsbeispiel ist der Abstand X' zwischen benachbarten Schlitzen 45 im zweiten Abschnitt 54 größer als der Abstand X zwischen be nachbarten Schlitzen 46 im ersten Abstand 52 . In this embodiment, the distance X 'between adjacent slots 45 in the second section 54 is greater than the distance X between adjacent slots 46 be at the first distance 52nd Jedoch könnte für X' jeder geeignete Abstand, oder beliebige geeignete Ab stände, gelten, einschließlich verschiedener Abstände von X' entlang der Länge des zweiten Abschnitts 54 . However 'any suitable distance, or any suitable Ab stands, apply, including different distances from X' could for X along the length of the second portion 54th Auch ist bei diesem Ausführungsbeispiel die Tiefe Y' der Schlitze 46 a, 46 b, 46 c und 46 d im zweiten Abschnitt 54 kleiner als die Tiefe Y im ersten Abschnitt 52 . Also, in this embodiment, the depth Y 'of the slots 46 a, 46 b, 46 c and 46 d is smaller than the depth Y in the first section 52 in the second section 54th Bei diesem Ausführungsbei spiel beträgt die Tiefe Y' ungefähr 1/2 des Durchmessers des Rohrs 40 , und die Tiefe Y entspricht ungefähr 2/3 des Durchmessers des Rohrs 40 . In this game, the depth is Ausführungsbei Y 'is about 1/2 of the diameter of the tube 40, and the depth Y is approximately equal to 2/3 of the diameter of the tube 40th Jedoch können Y und Y' jede geeignete Tiefe aufweisen. However, Y and Y 'may have any suitable depth. Außerdem kann Y' in verschiedenen der Schlitze 46 a, 46 b, 46 c, 46 d entlang der Länge des zweiten Abschnitts 54 verschieden sein, wie zum Vorderende des Rohrs hin tiefer. In addition, Y 'in different ones of the slots 46 a, 46 b, 46 c, 46 d be along the length of the second portion 54 miscellaneous, such as deeper toward the front end of the tube. Die Breite der Schlitze 46 a, 46 b, 46 c und 46 d entlang dem zweiten Abschnitt 54 könnte dieselbe wie die Breite W im ersten Abschnitt 54 sein, sie könnte aber auch verschieden von dieser Breite W sein und/oder sie könnte entlang der Länge des zweiten Abschnitts 54 variieren oder unterschiedlich sein, wie zum Vorderende des Rohrs hin brei ter. The width of the slots 46 a, 46 b, 46 c and 46 d along the second section 54 is the same as the width may be W in the first section 54, but they could also be different W of the width and / or it could be along the length of vary the second portion 54 or be different, as the front end of the tube towards mash ter. Der zweite Abschnitt 54 verfügt vorzugsweise über grö ßere Knickfestigkeit, größere Steifigkeit (oder geringere Flexibilität) und größere Drehmomentstabilität als der erste Abschnitt 52 , was für passive Auslenkung eher als für aktive Auslenkung geeignet ist. The second portion 54 preferably has assume greater kink resistance, increased stiffness (or lesser flexibility) and greater torque stability than the first portion 52, which is as suitable for active deflection on passive rather deflection. Durch Anbringen der Schlitze weiter entfernt voneinander und mit kleinerer Tiefe Y' weist der zweite Abschnitt 54 größere Knickfestigkeit und Drehmoment stabilität als der erste Abschnitt 52 auf. By providing the slots farther apart and with a smaller depth Y ', the second section 54 greater kink resistance and torque stability than the first portion 52. Die vier Richtun gen A, B, C, D der Schlitze sorgen auch für die Fähigkeit einer Auslenkung des zweiten Abschnitts 54 in vier Richtun gen statt nur einer Auslenkbarkeit in zwei Richtungen wie im ersten Abschnitt, um bessere Fähigkeiten passiver Auslenkung zu erzielen. The four Richtun gene A, B, C, D of the slots also provide for the ability of a deflection of the second portion 54 in four Richtun gene instead of only one deflection capability in two directions as in the first section in order to achieve better skills passive deflection.

Der dritte Abschnitt 56 des Rohrs 40 ist zwischen dem zwei ten Abschnitt 54 und dem nicht geschlitzten Abschnitt 59 am Hinterende vorhanden. The third portion 56 of the tube 40 is present between the two th portion 54 and the non-slotted portion 59 at the rear end. Jedoch muss der dritte Abschnitt bei einem alternativen Ausführungsbeispiel keine Schlitze auf weisen. However, in an alternative embodiment, the third portion must have no slots. Bei diesem Ausführungsbeispiel erstreckt sich der dritte Abschnitt 56 entlang dem größten Teil der Länge des Rohrs 40 . In this embodiment, the third portion 56 extends along most of the length of the tube 40th Das Muster der Schlitze 46 entlang dem dritten Ab schnitt 56 weist einen anderen Abstand X" auf, stimmt jedoch ansonsten mit dem Muster der Schlitze im zweiten Abschnitt 54 überein. Bei einem alternativen Ausführungsbeispiel kön nen die Variablen Y und W verschieden sein, die Richtungen der Schlitze 46 im dritten Abschnitt 56 können verschieden sein und der Abstand X" kann entlang der Länge des dritten Abschnitts variieren. The pattern of the slots 46 along the third From section 56 has a different distance X ", but agrees otherwise consistent with the pattern of the slots in the second section 54th In an alternative embodiment Kgs NEN the variables Y and W are different, the directions of the slots 46 in the third section 56 may be different, and the distance X "may vary along the length of the third portion. Die Fig. 7A bis 7E zeigen eine derar tige Variation, bei der der dritte Abschnitt 56 " des Rohrs 40 über Schlitze 56 in fünf Richtungen M, N, O, P, Q in das Rohr hinein verfügt. Der dritte Abschnitt weist vorzugsweise eine größere Knickfestigkeit, größere Steifigkeit (oder ge ringere Flexibilität) und größere Drehmomentstabilität als der erste und zweite Abschnitt 52 , 54 auf. Bei diesem Aus führungsbeispiel ist dies durch den größeren Abstand X" be werkstelligt, jedoch könnte alternativ eine der anderen Va riablen oder eine Kombination derselben verwendet werden, die für Knickfestigkeit und Drehmomentstabilität sorgen. FIGS. 7A to 7E show a Derar term variation in which the third section 56 "of the tube 40 in five directions M, N, O, P, Q into the tube has slots 56. The third section preferably has a larger buckling strength, greater rigidity (or ge ringere flexibility) and greater torque stability than the first and second portions 52, 54. in this from the guide, for example, this is werkstelligt by the greater distance X "be, but alternatively one of the other Va could ables or a combination these may be used that provide kink resistance and torque stability. Wenn bei einem Ausführungsbeispiel der dritte Abschnitt 56 keine Schlitze aufweist, wird die Dicke der Rohrwand so aus gewählt, dass sie ohne Verwendung von Schlitzen für ausrei chende Schaftflexibilität sorgt. If having no slots 56 in one embodiment, the third portion, the thickness of the tube wall is so made chosen to ensure without the use of slots for suffi sponding shaft flexibility.

Der Abschnitt 59 erstreckt sich in den Griff 12 und ist fest mit dessen Rahmen verbunden. The portion 59 extends into the handle 12 and is fixedly connected to the frame.

Es wird erneut auf die Fig. 1 bis 3 Bezug genommen, gemäß denen der Mantel 32 vorzugsweise aus einem elastischen Kunststoff- oder Polymermaterial besteht. Referring again to Figs. 1 through 3, according to which the sheath 32 is preferably made of a resilient plastic or polymer material. Der Mantel könnte auch eine Aufbauverstärkung enthalten, wie in der am 29. Mai 1998 mit dem Titel "Flexible Pressure Resistant Cover For The Articulation System Of A Medical Instrument" eingereich ten US-Patentanmeldung Nr. 09/087,305 offenbart. The jacket could also include a structural reinforcement as disclosed in the incorporated rich th on May 29, 1998 entitled "Flexible Pressure Resistant Cover For The Articulation System Of A Medical Instrument" US patent application Ser. No. 09 / 087,305. Der Mantel 32 ist vorzugsweise direkt am Rohr 40 befestigt, jedoch nicht durch einen Kleber. The sheath 32 is preferably attached directly to the pipe 40, but not by an adhesive. Jedoch kann bei alternativen Aus führungsbeispielen jede geeignete Maßnahme dazu verwendet werden, den Mantel 32 am Rohr 40 zu befestigen, einschließ lich eines Klebers. However, in alternative from any appropriate measure can be used to exemplary embodiments, to attach the shell 32 to the tube 40, confining Lich an adhesive. Der Mantel 32 kann entlang der gesamten Länge des Rohrs 40 befestigt werden, oder er kann nur an vorbestimmten, begrenzten Orten befestigt werden, wie lediglich in den Abschnitten 58 , 59 , wobei er ansonsten an keiner anderen Stelle befestigt ist. The sheath 32 may be attached along the entire length of the tube 40, or it may be attached only to predetermined limited locations, such as only in the portions 58, 59, being otherwise fixed to any other place. Daher können Stücke entlang dem Schaft 14 vorhanden sein, an denen sich der Mantel rela tiv zum Rohr 40 bewegen kann. Therefore, pieces along the shaft 14 may be present at which the shell can rela tive to the tube 40 move. Beim Stand der Technik wurde Kleber mit verschiedenen Dicken entlang der Länge des Schafts verwendet, um für verschiedene Knickfestigkeiten und Schaftflexibilitäten entlang der Länge des Schafts zu sor gen. Zum Hinterende des Schafts hin wurde eine dickere Kle beschicht verwendet, um die Knickfestigkeit des Schafts dort höher zu machen, jedoch mit dem unerwünschten Problem, dass das Hinterende des Schafts einen größeren Außendurchmesser als das Vorderende aufwies. In the prior art adhesive was used having different thicknesses along the length of the shaft to gen for different bending strengths and shaft flexibilities along the length of the shaft to sor. To the rear end of the shaft towards has a thicker Kle used beschicht to the column strength of the shaft higher there to make, but with the undesirable problem that the rear end of the shaft having a larger outer diameter than the front end. Es ist bevorzugt, dass der Au ßendurchmesser klein ist, wie dann, wenn das Endoskop durch kleine Öffnungen eingeführt wird, wie den Harnleiter oder die Harnröhre eines Patienten. It is preferable that the Au is ßendurchmesser small, such as when the endoscope is inserted through small openings, such as the urethra or the urethra of a patient. Bei der Erfindung ist es nicht erforderlich, die Knickfestigkeit und die Steifigkeit unter Verwendung einer erhöhten Dicke einer Kleberschicht zu erhöhen, da das Rohr 40 mit ausreichender Knickfestigkeit und Steifigkeit versehen ist. In the invention, it is not necessary to increase the buckling strength and rigidity using an increased thickness of an adhesive layer, since the tube is provided with a sufficient column strength and rigidity 40th Daher kann der Schaft 14 ent lang seiner Länge einen gleichmäßigen Außendurchmesser auf weisen. Therefore, the shaft 14 may have a long ent uniform outer diameter along its length. So kann die Dicke oder die Außenabmessung des Schafts minimiert werden. Thus, the thickness or outer dimension of the shaft can be minimized.

Beim Stand der Technik wurde der Objektivkopf an einer Aus lenkanordnung befestigt, die wiederum an einer Schaftanord nung befestigt wurde. In the prior art, objective head was mounted steering arrangement on an off, which in turn was attached to a Schaftanord planning. Die Erfindung ermöglicht es, ein En doskop zu schaffen, das nicht über eine aktive Auslenkanord nung und eine gesonderte Schaftanordnung verfügt. The invention makes it possible to create a En doskop that does not have an active Auslenkanord planning and a separate shaft assembly. Statt des sen ermöglicht es die Erfindung, dass sich das Rohr 40 über die gesamte Länge des Schafts erstreckt, wobei dieses ein zelne Rohr 40 Funktionen ausübt, die im Stand die Technik durch die zwei Anordnungen ausgeführt wurden. Instead of the sen, the invention allows that the tube 40 extends over the entire length of the shaft, said indi vidual tube 40 exerts functions that the technique carried out by the two arrays in the prior. Unter Verwen dung des einzelnen Rohrs 40 kann der Schaft 14 in weniger Zeit und mit geringeren Kosten hergestellt und zusammenge baut werden als der Schaft im Stand der Technik aus zwei Anordnungen, und er kann zuverlässiger arbeiten, da weniger Teile verwendet sind, da die superelastische Legierung zu verlässiger ist und da geringere Gefahr eines Ausfalls oder einer Ermüdung des Schafts 14 als beim Stand der Technik be steht. Under USAGE extension of the individual tube 40, the shaft 14 may be produced in less time and at lower cost and together quantity builds than the shank in the art of two assemblies, and he can operate more reliably, since fewer parts are used, since the super-elastic alloy is more reliable and less risk because of a failure or fatigue of the shaft 14 as in the prior art is be. Der Objektivkopf 34 kann innerhalb des Vorderendes des Rohrs 40 positioniert werden, wobei es sich um dasselbe Rohr handelt, das sich über den Rest des Schafts erstreckt und nicht nur über die aktive Auslenkanordnung, wie beim Stand der Technik. The objective head 34 can be positioned within the front end of the tube 40, wherein it is the same pipe, which extends over the remainder of the shaft, and not just via the active deflection assembly, as in the prior art.

Rohre aus einer superelastischen Legierung können derzeit leicht von Herstellern erworben werden. Pipes made of a super-elastic alloy can currently be easily purchased from manufacturers. Die Rohre werden derzeit mit gleichmäßiger Wanddicke hergestellt, jedoch ist es möglich, die Wanddicke für verschiedene Steifigkeiten entlang der Rohrlänge zu variieren. The pipes are currently produced with uniform wall thickness, but it is possible to vary the wall thickness for different stiffness along the tube length. Jedoch enthalten derzeit von Herstellern verkaufte Rohre aus superelastischen Legie rungen keine Schlitze. However, currently included sold by manufacturers tubes made of super-elastic alloy coins conclusions no slots. Um das Endoskop 10 herzustellen, müs sen die Schlitze 46 in das Rohr aus einer superelastischen Legierung eingearbeitet werden. To prepare the endoscope 10, the slots Müs sen be incorporated into the tube from a superelastic alloy 46th Rohre können mit vorge schnittenen Längen erworben werden. Tubes can be purchased with pre-cut lengths. Ein Verfahren zum Her stellen der Schlitze 46 kann eine Laserschneidvorrichtung verwenden. A method for Her face the slots 46 may employ a laser cutting device. Der Laser der Vorrichtung sollte die Schlitze 46 in das geschlossene Rohr einarbeiten, während die Vorrich tung das Rohr und den Laser relativ zueinander bewegt. The laser of the device should incorporate the slots 46 into the closed tube while the Vorrich tung the tube and the laser moved relative to each other. Bei einem bevorzugten Ausführungsbeispiel wird eine programmier bare Computersteuerung dazu verwendet, die Vorrichtung zum Herstellen der Schlitze 46 mit dem gewünschten Muster oder den gewünschten Mustern entlang der Länge des Rohrs herzu stellen. In a preferred embodiment, a bare programmed computer control is used to provide 46 near, the device for manufacturing of the slots with the desired pattern or the desired patterns along the length of the tube. So kann das mindestens eine Muster durch geeignete Computerprogrammierung ausgewählt oder geändert werden, um Rohre mit verschiedenen Schlitzmustern herzustellen. This can be at least one pattern selected by suitable computer programming or changed to produce pipes with different slot patterns. Diese verschiedenen Rohrtypen können dazu verwendet werden, Endos kope mit verschiedenen Schafteigenschaften herzustellen, wie mit verschiedenen Steifigkeiten entlang ihrer Länge und ver schiedenen Fähigkeiten zur aktiven Auslenkung innerhalb ihrer Abschnitte für aktive Auslenkung (für eine Richtung, zwei Richtungen, vier Richtungen, usw.). These various types of tubes can be used to Endos kope with different shaft characteristics to produce, as with different stiffnesses along its length and ver different capabilities to the active deflection within their sections for active deflection (for one direction, two directions, four directions, etc.). Bei einem alterna tiven Verfahren kann elektrische Entladungsbearbeitung (EDM = electrical discharge machining) mittels eines Drahts zum Herstellen der Schlitze verwendet werden. In an alterna tive process electric discharge machining can be used by means of a wire for producing the slots (EDM = electrical discharge machining). Jedoch kann zum Herstellen der Schlitze jedes geeignete Verfahren genutzt werden. However, for producing the slots, any suitable method can be used.

Einer der Vorteile der Erfindung besteht in der Möglichkeit, Endoskope mit verschiedenen Schafteigenschaften dadurch her zustellen, dass Rohre mit verschiedenen Schlitzmustern ver sehen werden, wie mit einfach mehr oder weniger Schlitzen 46 im Rohr 40 . One of the advantages of the invention consists in the possibility to determine endoscopes with different shaft characteristics are prepared by pipes with different slot patterns will see ver, as with simply more or less slots 46 in the tube 40th Durch diesen Vorteil kann ein Benutzer ein En doskop mit gewünschtem Verlauf der Schaftsteifigkeit aus ei ner Anzahl von Endoskopen auswählen, die ansonsten praktisch gleich sind. Because of this advantage, a user can be a En doskop with the desired course of shaft stiffness from egg ner number of endoscopes Select, which are virtually identical otherwise. Der Hersteller kann auch ein Endoskop kunden spezifisch mit einem gewünschten Verlauf der Schaftsteifig keit dadurch für einen Benutzer herstellen, dass er ledig lich die Schlitzherstellvorrichtung für ein geeignetes Schlitzmuster umprogrammiert. The manufacturer can also be a custom endoscope with a desired course of the Schaftsteifig ness characterized prepared for a user to single Lich reprograms the Schlitzherstellvorrichtung of a suitable slit pattern. Die Erfindung ermöglicht es auch, einen Schaft abzubauen und das Rohr 40 mit mehr Schlitzen zu versehen, um dessen Schafteigenschaften zu än dern. The invention also makes it possible to reduce a shaft and to provide the tube 40 with more slots to the shank properties än countries.

Endoskope müssen nach ihrem Gebrauch gereinigt werden. Endoscopes must be cleaned after use. Zu einem Reinigungsverfahren gehört das Sterilisieren mit einem Gas und das Absenken des Drucks. Ein Problem bei Gassterili sation besteht darin, dass der Druck innerhalb des Schafts nach außen drückt, wenn der Druck außerhalb des Schafts ab gesenkt wird. To a purification process of the sterilizing part with a gas and the lowering of the pressure. One problem with Gassterili organization is that the pressure within the shaft pushes outward when the pressure outside of the shaft is from lowered. Bei Endoskopen mit Belüftungsventilen ist dies im Allgemeinen kein Problem. Endoscopes with ventilation valves, this is generally not a problem. Jedoch erhöhen Belüftungsventi le die Kosten des Endoskops, und wenn ein Benutzer das Be lüftungsventil für den Reinigungsvorgang zu öffnen vergisst, kann der Schaftmantel reißen. However Belüftungsventi le increase the cost of the endoscope and if a user forgets to open for the cleaning process the Be vent valve, the shank cover may crack. Es existieren Endoskope ohne Belüftungsventile. There endoscopes without ventilation valves. Statt dessen verfügen sie über verstärkte Mäntel. Instead, they have reinforced coats. Ein verstärkter Mantel, wie in der oben angegebenen Patentanmeldung erwähnt, kann dieses Problem eines Zerrei ßens überwinden. A reinforced coat, as mentioned in the above patent application can overcome this problem a Zerrei ßens. Eine andere Art zum Überwinden dieses Prob lems besteht darin, innerhalb des Rohrs 40 ein dünnwandiges Verstärkungsrohr anzubringen. Another way to overcome this prob lem is to bring a thin-walled reinforcing tube inside the tube 40th Gemäß Fig. 8 besteht eine an dere Art zum Überwinden dieses Problems darin, den Schaft 14 ' innerhalb des Bereichs 42 des Rohrs 40 mit einem Rohr 41 mit mehreren Gängen zu versehen. Referring to FIG. 8 there is a particular way of overcoming this problem, is to provide the shaft 14 'within the area 42 of the tube 40 with a tube 41 having a plurality of gears. Das Rohr 41 mit mehreren Gängen kann aus einem flexiblen Polymermaterial bestehen und Kanäle 70 , 72 , 74 , 76 für die Auslenkungs-Steuerungskabel und die Faseroptik sowie einen Kanal 78 , der einen Arbeits kanal bildet, beinhalten. The tube 41 having a plurality of gears may be composed of a flexible polymer material and conduits 70, 72, 74, 76 include the deflection control wire and fiber optics as well as a channel 78, which forms a working channel. Das Rohr kann auch ein solches mit einem einzelnen Hohlraum sein, wie das oben genannte dünn wandige Rohr. The tube may also be one having a single cavity, such as the above-mentioned thin-walled tube.

Claims (32)

1. Endoskop mit einem Steuerungsabschnitt ( 12 ) und einem sich ausgehend von diesem erstreckenden Schaft. 1. An endoscope with a control section (12) and an extending starting from this shaft. ( 14 ), dadurch gekennzeichnet , dass der Schaft einen Rahmen ( 26 ) mit einem einstückigen Rohr ( 40 ) entlang dem Hauptteil der Länge des Schafts aufweist, wobei das Rohr aus einer superelastischen Legierung besteht und es Schlitze ( 46 ) in es hinein zumin dest über einen Abschnitt ( 52 , 54 , 56 , 59 ) aufweist, und wobei es die superelastischen Eigenschaften der superelasti schen Legierung ermöglichen, dass sich das Rohr in der Nähe der Schlitze ohne wesentliche dauerhafte Verformung ver biegt, und sie dafür sorgen, dass der Schaft mit angemessen er Knickfestigkeit, Flexibilität und Drehmomentfestigkeit versehen ist, um in einen Patientenkörper eingeführt werden zu können. (14), characterized in that the shaft comprises a frame (26) having an integral tube (40) along the major part of the length of the shaft, said tube consists of a super-elastic alloy and slots (46) in at least in it over a portion (52, 54, 56, 59), and wherein enabling the super-elastic properties of the superelasti rule alloy, that the tube bends ver in the vicinity of the slots without significant permanent deformation, and they ensure that the stem with appropriate it is provided kink resistance, flexibility and torque strength to be inserted into a patient's body to.
2. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass ein erster der Abschnitte einen ersten Abstand (X) zwischen den Schlitzen und ein zweiter der Abschnitte einen zweiten, anderen Abstand (X') zwischen den Schlitzen aufweist. 2. A endoscope according to claim 1, characterized in that a first of the sections a first distance (X) between the slots and a second one of the portions a second, different distance (X ') between the slots.
3. Endoskop nach Anspruch 2, dadurch gekennzeichnet, dass ein dritter der Abschnitte einen dritten Abstand (X") zwi schen den Schlitzen aufweist, der verschieden vom ersten und zweiten Abstand (X, X') ist. 3. An endoscope according to claim 2, characterized in that a third of the sections a third distance (X ") Zvi rule having the slots, of different from the first and second distance (X, X ').
4. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass sich die Schlitze ( 46 ) entlang einem ersten der Abschnitte ( 52 , 54 , 56 ) mit einem ersten Muster mehrerer verschiedener Richtungen in das Rohr ( 40 ) hinein erstrecken. 4. An endoscope according to claim 1, characterized in that the slots (46) along a first of the portions (52, 54, 56) having a first pattern of several different directions in the tube (40) extending into it.
5. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass das erste Muster der Schlitze ( 46 ) solche Schlitze aufweist, die in verschiedenen Richtungen entlang dem Ersten Abschnitt in gemischtem Muster angeordnet sind. 5. An endoscope according to claim 4, characterized in that the first pattern of the slots (46) such slots which are arranged in different directions along the first section in a mixed pattern.
6. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass sich die Schlitze ( 46 ) im ersten Abschnitt über mehr als die Hälfte durch das Rohr erstrecken. 6. An endoscope according to claim 4, characterized in that the slots (46) extend in the first section over more than half through the tube.
7. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass sich die Schlitze ( 46 ) entlang einem zweiten der Abschnitte ( 52 , 54 , 56 ) mit einem zweiten, anderen Muster von Richtun gen in das Rohr hinein erstrecken. 7. An endoscope according to claim 4, characterized in that the slots (46) along a second of said sections (52, 54, 56) having a second, different pattern of Richtun gene into the pipe extend.
8. Endoskop nach Anspruch 4, dadurch gekennzeichnet, dass der erste Abschnitt einen ersten Abstand (X) zwischen den Schlitzen ( 46 ) und ein zweiter der Abschnitte einen zweiten, anderen Abstand (X', X") zwischen den Schlitzen aufweist. (X) between the slots (46) and a second of the portions of a second, different distance (X ', X ") has 8. An endoscope according to claim 4, characterized in that the first portion has a first distance between the slits.
9. Endoskop nach Anspruch 8, dadurch gekennzeichnet, dass sich die Schlitze ( 46 ) entlang dem zweiten Abschnitt mit einem zweiten, anderen Muster von Richtungen in das Rohr ( 40 ) hinein erstrecken. 9. An endoscope according to claim 8, characterized in that the slots (46) along the second portion having a second different pattern of directions in the tube (40) extend into it.
10. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass sich das Rohr ( 40 ) über die gesamte Länge des Schafts ( 14 ) erstreckt. 10. An endoscope according to claim 1, characterized in that the tube (40) over the entire length of the shaft (14).
11. Endoskop nach Anspruch 1, gekennzeichnet, durch einen Objektivkopf ( 34 ), der innerhalb des Rohrs ( 40 ) an dessen distalem Ende liegt. 11. An endoscope according to claim 1, characterized by an objective head (34) located within the tube (40) at its distal end.
12. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass der Schaft ( 14 ) ferner einen mit dem Rohr ( 40 ) verbundenen Mantel ( 32 ) aufweist und er im Wesentlichen über seine ge samte Länge einen im Wesentlichen gleichmäßigen Außendurch messer aufweist. 12. An endoscope according to claim 1, characterized in that the shaft (14) further comprises a to the tube (40) mantle (32) connected and it is substantially over its entire length ge having a substantially uniform outer diameter.
13. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass der Rahmen ( 26 ) ferner ein Rohr mit einem einelnen oder mit mehreren Hohlräumen innerhalb des einstückigen Rohrs ( 40 ) aufweist. 13. An endoscope according to claim 1, characterized in that the frame (26) further comprises a pipe having a einelnen or more cavities within the one-piece tube (40).
14. Endoskop nach Anspruch 1, dadurch gekennzeichnet, dass sich mindestens zwei der Schlitze ( 46 ) mit zwei verschiede nen Tiefen in das Rohr ( 40 ) hinein erstrecken. 14. An endoscope according to claim 1, characterized in that at least two of the slots (46) with two Various NEN depths into the tube (40) extend into it.
15. Endoskop mit einem Schaft ( 14 ), einem diesen durchdrin genden faseroptischen System ( 36 , 37 ) und einem ihn eben falls durchdringenden Auslenksteuerungssystem ( 22 ), dadurch gekennzeichnet, dass der Schaft einen Rahmen ( 26 ) mit einem Rohr ( 40 ) aus superelastischem Material aufweist, wobei sich Schlitze ( 46 ) in mindestens zwei verschiedenen Richtungen in das Rohr hinein erstrecken. 15. An endoscope with a shank (14), a this durchdrin constricting fiber optic system (36, 37) and a him just in case penetrating Auslenksteuerungssystem (22), characterized in that the shaft comprises a frame (26) having a tube (40) from having superelastic material, said slits (46) extend into at least two different directions in the tube.
16. Endoskop nach Anspruch 15, dadurch gekennzeichnet, dass das Rohr ( 40 ) in einem ersten Abschnitt einen ersten Abstand (X) zwischen den Schlitzen ( 46 ) und in einem zweiten Ab schnitt einen zweiten, anderen Abstand (X', X") zwischen den Schlitzen aufweist. 16. An endoscope according to claim 15, characterized in that the tube (40) a first distance in a first portion (X) between the slots (46) and in a second cut from a second, different distance (X ', X ") having between the slots.
17. Endoskop nach Anspruch 15, dadurch gekennzeichnet, dass die Schlitze ( 46 ) mit anderer Richtung entlang einem ersten Abschnitt des Rohrs ( 40 ) mit einem gemischten Muster ange ordnet sind. 17. An endoscope according to claim 15, characterized in that the slots (46) with a different direction along a first portion of the tube (40) with a mixed pattern are being arranged.
18. Endoskop nach Anspruch 17, dadurch gekennzeichnet, dass sich die Schlitze ( 46 ) entlang einem zweiten Abschnitt des Rohrs ( 40 ) mit einem zweiten, anderen Muster von Richtungen als die Schlitze im ersten Abschnitt in das Rohr hinein er strecken. 18. An endoscope according to claim 17, characterized in that the slots (46) along a second portion of the tube (40) having a second, different pattern of directions than the slots in the first section into the tube he stretch.
19. Endoskop nach Anspruch 15, dadurch gekennzeichnet, dass sich mindestens zwei der Schlitze ( 46 ) mit zwei verschiede nen Tiefen in das Rohr ( 40 ) hinein erstrecken. 19. An endoscope according to claim 15, characterized in that at least two of the slots (46) with two Various NEN depths into the tube (40) extend into it.
20. Endoskop mit einem Steuerungsabschnitt ( 12 ) und einem sich ausgehend von diesem erstreckenden Schaft ( 14 ) mit ei nem im Wesentlichen rohrförmigen Rahmenelement ( 26 , 40 ), dadurch gekennzeichnet, dass der Schaft im Wesentlichen über seine gesamte Länge im Wesentlichen gleichmäßige Außenabmes sungen aufweist und das rohrförmige Rahmenelement den Schaft entlang seiner Länge mit mindestens zwei Abschnitten ( 52 , 56 , 56 ) mit zwei verschiedenen Steifigkeiten versieht. 20. endoscope with a control section (12) and a starting from this extending shaft (14) with egg nem substantially tubular frame member (26, 40), characterized in that the shaft is substantially solutions uniform Außenabmes over its entire length substantially has and the tubular frame member to the shaft along its length with at least two sections (52, 56, 56) provides two different stiffnesses.
21. Endoskop nach Anspruch 20, dadurch gekennzeichnet, dass das Rahmenelement ( 26 , 40 ) über einen ersten Abschnitt mit einem ersten Muster von Schlitzen ( 46 ) und einen zweiten Ab schnitt mit einem zweiten Muster von Schlitzen verfügt. 21. An endoscope according to claim 20, characterized in that the frame element (26, 40) has a first portion having a first pattern of slots (46) and a second cut from a second pattern of slots.
22. Endoskop nach Anspruch 21, dadurch gekennzeichnet, dass das erste Muster einen ersten Abstand (X) zwischen den Schlitzen aufweist und das zweite Muster einen zweiten, an deren Abstand (X', X") zwischen den Schlitzen aufweist. 22 comprises endoscope according to claim 21, characterized in that the first pattern at a first distance (X) between the slots and the second pattern a second, at the distance (X ', X ") between the slots.
23. Endoskop nach Anspruch 21, dadurch gekennzeichnet, dass das erste Muster Schlitze ( 46 ) aufweist, die sich mit einem ersten sich wiederholenden Muster verschiedener Richtungen in das Rahmenelement ( 26 , 40 ) hinein erstrecken, und das zweite Muster Schlitze aufweist, die sich mit einem zweiten sich wiederholenden Muster verschiedener Richtungen in das Rahmenelement hinein erstrecken, wobei die letztgenannten Richtungen zumindest teilweise verschieden gegenüber dem ersten sich wiederholenden Muster von Richtungen sind. 23. An endoscope according to claim 21, characterized in that the first pattern of slots (46) extending with a first repetitive pattern of different directions in the frame member (26, 40) into extend, and the second pattern slots extending in extending to a second repeating patterns of different directions in the frame member, the latter directions are at least partly different from the first repeating pattern of directions.
24. Endoskop nach Anspruch 21, dadurch gekennzeichnet, dass das erste Muster Schlitze ( 46 ) mit einer ersten Tiefe auf weist und das zweite Muster Schlitze mit einer zweiten, an deren Tiefe aufweist. 24. An endoscope according to claim 21, characterized in that the first pattern has slots (46) having a first depth and the second pattern with a second slots, having on their depth.
25. Verfahren zum Herstellen eines Endoskopschaftrahmens mit dem folgenden Schritten: 25. A method for producing an endoscope shaft frame with the following steps:
  • - Bereitstellen eines Rohrs ( 40 ) aus einer superelastischen Legierung und - providing a tube (40) made of a superelastic alloy, and
  • - Herstellen von Schlitzen ( 46 ) im Rohr, um mindestens einen Abschnitt des Rohrs mit erhöhter Flexibilität zu versorgen. - making slits (46) in the pipe in order to supply at least a portion of the tube having increased flexibility.
26. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass die Schlitze ( 46 ) durch einen Laser in das Rohr ( 40 ) eingeschnitten werden. 26. The method according to claim 25, characterized in that the slots (46) are cut by a laser into the tube (40).
27. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass die Schlitze ( 46 ) durch eine elektrische Entladungsma schine (EDM) in das Rohr ( 40 ) eingeschnitten werden. 27. The method according to claim 25, characterized in that the slots (46) by an electrical Entladungsma machine (EDM) into the tube (40) are cut.
28. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass das Rohr ( 40 ) zwischen dem Herstellen mindestens zweier der Schlitze ( 46 ) verdreht wird. 28. The method according to claim 25, characterized in that the tube (40) is rotated between the production of at least two of the slots (46).
29. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass die Schlitze in einem ersten der Abschnitte ( 52 , 54 , 56 ) mit einem ersten Abstand (X) zwischen den Schlitzen und in einem zweiten der Abschnitte mit einem zweiten, anderen Abstand (X', X") hergestellt werden. 29. The method according to claim 25, characterized in that the slits in a first of the portions (52, 54, 56) having a first distance (X) between the slots and in a second of the portions with a second, different distance (X ' , X ") are prepared.
30. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass ein erster der Schlitze ( 46 ) mit einer Tiefe in das Rohr ( 40 ) hinein hergestellt wird und ein anderer der Schlitze mit einer zweiten, anderen Tiefe in das Rohr hinein hergestellt wird. 30. The method according to claim 25, characterized in that a first of said slots (46) having a depth in the tube (40) is produced in and another of said slots having a second, different depth is formed into the tube.
31. Verfahren nach Anspruch 25, dadurch gekennzeichnet, dass Schlitze in mindestens zwei der Abschnitte ( 52 , 54 , 56 , 59 ) hergestellt werden, wobei in jedem Abschnitt ein anderes Muster der Schlitze hergestellt wird. 31. The method according to claim 25, characterized in that the slots in at least two of the sections (52, 54, 56, 59) are prepared, wherein a different pattern of slots is formed in each section.
32. Verfahren zum Herstellen von Endoskopen, gekennzeichnet durch die folgenden Schritte: 32. A method for the manufacture of endoscopes, characterized by the steps of:
  • - Bereitstellen einer ersten Art eines Schaftrahmens mit ei nem ersten Rohr mit einem ersten Muster von Schlitzen in dieses erste Rohr hinein; - providing a first type of a heald frame with egg nem first tube having a first pattern of slots in this first tube inside;
  • - Bereitstellen einer zweiten Art eines Schaftrahmens mit einem zweiten Rohr mit einem zweiten Muster von Schlitzen in dieses zweite Rohr hinein, wobei das zweite Muster vom ersten Muster verschieden ist; - providing a second type of a heald frame to a second pipe having a second pattern of slots in said second tube into it, wherein the second pattern from the first pattern is different; und and
  • - Zusammenbauen eines ersten der Endoskope mit dem ersten Schaftrahmentyp und eines zweiten der Endoskope mit dem zweiten Schaftrahmentyp; - assembling a first one of the endoscopes with the first shaft and a second frame type of the endoscopes with the second heddle frame type;
  • - wobei das erste und zweite Endoskop verschiedene Knickfes tigkeitsmuster entlang ihrer Länge aufweisen, die durch die verschiedenen Schlitzmuster im ersten und zweiten Rohr ge schaffen sind. - wherein the first and second endoscope having different Knickfes tigkeitsmuster along its length that are provide by the different pattern of slots in the first and second pipe ge.
DE2000152679 1999-10-26 2000-10-24 Endoscope has control section and shaft with frame, and pipe containing slits Withdrawn DE10052679A1 (en)

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US6749560B1 (en) 2004-06-15 grant
JP2001161631A (en) 2001-06-19 application

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